/Engine/Source/Runtime/SkeletalMeshDescription/Public/SkeletalMeshAttributes.h
Skin Weights MethodsRegister a new skin weight profile with the given name. The attribute name will encode the profile name and it will be listed inGetSkinWeightProfileNames(). Returnstrue_ if the profile was successfully registered. Returnsfalse_ if the attribute was already registered or ifIsValidSkinWeightProfileName()returned false.
bool RegisterSkinWeightAttribute ( const [FName](API\Runtime\Core\UObject\FName) & InProfileName )